Combined form spreader and tie



June 6.1933. s. C. AWBRE Y 1,913,326

doMBINEp'FoRM SPREADER AND TIE Filed May 24, 1930 INVENTOR, Jaw/(16V 6fflzan y.

A TTORNEYS.

. Patented June 6, 1933 'sAMnnIJ eAwnnnY, on Kansas errmnrrssounr,Assreivon r N 1 KANSAS CITY, ivrrssonar i PATENT OFFICE COMBINED Foamsrnnannn ANDITIE Application filed May 24,

tain thewalls of the form in their properly spaced relation during thebuilding of the same and while the concrete is being poured. It isknownin this art that form tie s and Spreaders must presentstrength enough toi k moval of the form walls after. th

concrete hasset. There is always a projected his maintain the form.walls in proper relative position, yet must be designed to permit ofhead which-must be entirely removed or broken away from. the bodyportion of the tieand spreader. and it is an object of this inventiontoprovide a formofconstruction which will permit of quick and easy removalof the head. i i

The primary object of this invention is to providea form tie andspreader which is in.- expensive to manufacture, efficient in itsoperation and unlikely to cause injury to. the

concrete wall through the attraction of moisture after the same hasserved its purpose as a support for the form used in pouringthe wall. 1i

Another Object of this invention is the provision of a new article ofmanufacture espewas.

cially adapted for useas a form tie and spreader that is provided with aplurality of key engaging slots, one ofwhich slots extends inwardly toterminate in a transverse opening which serves as a trap for water ormoisture and precludes the same from entering thewall further-than saidopening which is filled with concrete when the wall is poured.

. Another object of the invention is the contemplation of attic and formspreader having a head at each end thereof provided with a corner notchwhich permits of cutting the tie from material with the ends of,adjacent ties in overlapped relation.

An even further objectof theinvention is the provision of a tie andspreader for concrete forms which is maintainedin combination therewiththrough the use of a novelly constructed specially formed key whichpresents a form engaging edge of equalefiect 1930. Serial No. 455,331. 1

forth atthis point, but will be made clear throughout the detailedspecification referring to theaccoinpanying drawing wherein Figure 1 isa perspective view of a form tie and spreader embodyingthefnovelfeatures, contemplated by this invention. I r F ig. 2 is areduced fragmentary vertical section through the opposing walls of aconcrete form showing the tie and spreaderin the operative position. j rFig. 3 is an enlarged fragmentary detailed view along the face of oneend of thetie and spreader, key removed.

Fig. {1 is a perspective view of the specially formed key which may beused with the tie and spreader. j p Q Fig. 5 is a fragmentary verticalcross section through the tie and spreader positioned with thewall form,and, r i i Fig. I ,6. is r a fragmentary view. of one end of a modifiedformof the tie and spreader.

Like reference characters refer to similar tinct portions. The body 14is stiffened through the use of an embossed rib or bead 16 whichextendslongitudinally of plate 12 along the bodyportion 14 thereof. Ateach end of the plate 12 is formed a wall engaging head 18 which isconnected to body 142 by the neck 20. Apair of spaced apart lugs 22 arestruck from plate 12 and projectedtherefrom in aplane extendingtransversely to the plate to opposite sides thereof as shown in thedrawing. Striking lugs 22 from plates 12c1'eates the neck 20 whichshould be formed as clearly shown in Fig. 3 withits outer edgesconverging as the head 18 is approached. Thus neck 20 will be narrowerat the end joined by head 18 than where it is joined by body 14. Lugs 22project substantially perpendicularly to plate 12 and, obviously theirinner edges will be angled in conformity with the angle of convergencyof neck 20. Lugs 22 are disposed in substantially the 2 same plane andbear against the inner sides of walls 8 when the tie and spreader is inposition.

A centrally positioned longitudinally extending slot 24 is formed inplate 12 to exrious thicknesses.

tend across neck and into head and body 18 and 14 respectively. Thisslot 24 intersects the plane of lugs 22 and terminates in communicationwith transverse slot '26 which may be arcuate as illustrated in thedrawing and which should project toward the opposite edges of plate 14to terminate beyond the adjacent edges of lugs 22. When the tie andspreader is inposition the end of slot'24 lying in head 18-is beyond theouter surface of the wall 8 tope'rmit insertion of the hereinafterdescribed key; A hole 28 should be pierced in the position shown toreceive a nail'or similar fastening means not here shown when the tieand spreader is positioned at the top of the form walls 8.

v A slot 30 formed in head 18 between one edge thereof and slot 24, yetnot in overlapped relation therewith, allows the tie and spread er to beused with forms having walls of va- A corner notch 32 is cut into thehead 18 to extend inwardly thereof from its end and one side to a pointbeyond slot 30. An angled side 34 of corner notch '32 intersects linesprojected longitudinally 26 from the central slot 24 and meets thetransverse edge'36 of corner notch 32 as illustrated in Fig.3. It isnotable that the adjacent ends of slot 24 and 30 and the edge 36 ofcorner notch 32 all lie in substantially the same plane which extendstransversely of the head 18. The corner notch 32 at one end of plate 12is diagonally opposite the corner notch 32 formed in the other endthereof. Thus when the tie and spreader is being manufactured from stockof constant width there is an overlap which presents an appreciablesaving in a manner which in no way a flects the efliciency and strengthof the device.

In combining the tie and spreader above described with the concrete formhaving walls 8, it is desirable to provide a. quickly positioned key 38which may be made as shown in Fig. 4. The edge 40 of key 38 lies in astraight continuous plane to rest against the outer face of the formwall 8. A shoul- '65 proached from shoulder 42.

need not lose time by concerning himself as to which end should enterslot 24 or 30 as the case may be. Likewise, key 38 may be efficientlycut from stock without waste.

The faces of the concrete wall 10 should be smooth after the form hasbeen removed. Walls 8 are loosened merely by dislodging keys 38, whichmay be used again, and when walls 8 have been removed the heads 18 arebroken away by severing the plate 14 at the narrowest part of neck 20.

The advantage of the construction described is obvious. The relation ofslots and lugs renders the breaking off of the head 18 exceptionallyeasy and since the lugs 22 come off with head 18, it is plain to be seenthat the only portion of the plate 14 forming the tie and spreader thatis exposed is the ends of the two portions forming the neck 20. As shownin Fig. 3, lugs 22 form cavities in the wall 10 after the concrete hasset which, after the lugs and head have been removed, may be filled withconcrete to seal the wall and render it impervious to moisture. Thetransverse slot 26 and a portion of slot 24 is filled with concretewhenthe Wall is being poured and in the event moisture attempts to worka way inwardly or outwardly along the plate left therein, it will betrapped by the various off-sets presented at the end of the plateembedded in the concrete wall 10.

Manifestly, the tie and spreader shown and described is susceptible ofbeing formed in many ways. For example, the modification shown in Fig. 6might be followed. The only difference between the preferred and thismodified form being that the lugs 22 are struck from the plate 14 tocommunicate directly with the sides of longitudinal slot 24 rather thanto lie adjacent to the edges of the device. The portion to be severedwhen removing the head remains the same size and the efliciency of thetie and spreader is not changed.

Having thus described the invention, what is claimed as new and desiredto be secured by Letters Patent is:

1. A form tie and spreader comprising an elongated 'plate,'a pluralityof spaced-apart lugs projecting from the plate in a plane transverse tothe same, a longitudinal slot formed through the plate intersecting theplane of said lugs and a transverse slot through the plate at the innerend of the longitudinal slot and joined thereby.

2. A form tie and spreader comprising an elongated plate, a pair ofspaced-apart lugs projecting from'the plate in a plane transverse to thesame adjacent each end respec tively thereof, a longitudinal slot formedthrough the plate extending between said lugs and intersecting the planethereof and a transverse slot through the plate at the inner end of thelongitudinal slot, joined thereby and extending outwardly therefromtoward the edges of the plate to pointsbeyond the adjacent edges of saidlugs.

3. A form tie and spreader comprising an elongated plate having a wallengaging head at each end thereof joined by a ribbed body, a neckbetween each head and the body respectively, a central longitudinal slotformed through the plate and across the neck and extending into the headand body of the plate and an arcuate transverse slot formed through saidplate and joined by the longitudinal slot at its inner end.

4. A formtie and spreader comprising an through said plate and acrossthe neck and 7 extending into the head and body of the plate and atransverse slot joined by the 1011- gitudinal slot at its inner end.

In testimony whereof, I hereunto aflix my signature.

SAMUEL C. AWBREY.

